Labconco PURICARE Procedure Station Models 34812xx - Manual (Page 80)

Page 80 of 197
Fluorescent Light Level (optional)
The fluorescent light intensity should be measured as described in ANSI/NSF Standard
49:2007, Annex F.
NOTE: The light meter should be color- and cosign corrected for accurate
readings.
1. Test points should be marked along the centerline of the work surface, starting 6
inches from the side wall, with subsequent points 12 inches apart until the center
of the work surface is reached. Repeat for the other side of the work area.
2. Take background readings at the test. It should be 15 foot-candles maximum.
3. Turn on the fluorescent lights and let them warm up for at least 5 minutes.
4. Measure the light intensities at the test points.
Acceptance
The average light level should be no less than 45 foot-candles greater than the
background level, where maximum background light levels average a maximum of
15 foot-candles.
Most common causes for insufficient light levels are:
a. Malfunctioning lamp(s)
b. Old lamp(s)
c. Dusty/dirty lamp surfaces
Noise Level (optional)
The noise level should be measured as described in ANSI/NSF Standard 49:2007.
1. Noise level should be recorded from a single point, on the centerline of the
cabinet, at a position 14 inches above the work surface, and 12 inches from the
front of the cabinet.
2. Take a background reading with the cabinet blower off at the test point. It
should be less than 55 dbA.
3. Start the cabinet blower, and take a sound reading.
Acceptance
Sound levels should be less than 67 dbA when the cabinet is new, and less than 73
dbA when the filters are loaded.